Well-blower.



J. E. MOEVOY.

WELL BLOWER.

APPLICATION IILBD JAN. 2a, 1906.

Patented Dec. 15, 1908.

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lll/f III/lll n Jade/2% JOSEPH H. MCEVOY, OF HOUSTON,

TEXAS, AssIeNoE or ONE-HALF To WALTER B. SHAEP,

OF DALLAS, TEXAS.

wann-BLOWER.

Specification of Letters latent.

Patented Dec. 15, 190.

Application led January 23, 1906. Seria1No. 297,617.

To all whom it may concern:-

Be it known that I, JOSEPH H. McEvoY, a citizen of. the United States,residing at Houston, in the county of Harris, State of Texas, haveinvented certain new and useful Improvements in Well-Blowers, of whichthe following is a specification, reference being had therein to theaccompanying drawings. A

This invention relates to a well blower, and particularly to a novelconstruction of valve ada ted to be attached to the air ipe of a wel fordischarging the contents t ereof at different levels and air pressure.

The invention has for an object to provide an improved construction andarrangement of the valves disposed at successive points in the length ofthe air tube so that they lwill be automatically opened atlpredetermined pressures of air, the amount of said pressure being)decreased in the descending length of the tu e.

A further object of the invention is to provide an improved constructionand arrangement of these automatic valves by which they serve as acoupling for the sections of the air tube and rovide a minimum surfaceexposed to the iquid in the well, and the maximum exposed surface totheair pressure. l

Other and further objects and advantages 4of the invention will behereinafter set forth and the novel features thereof defined by the apended claims.

n the drawing z--Figure 1 is a vertical section illustrating theapplication of the invention to a well; Fig. 2 is an enlarged horizontalsection through one of the valves; Fig. 3 is an enlarged detail section*of the parts of this valve se arated from each other, Fig. 4 is asectiona view of a modiiied form of the invention, and Fig. 5 is asimilar view of a further modification.

Like letters of reference indicate like parts throughout the severalviews of the drawings, The letter A designates a well tubing which maybe of any desired construction, and is preferably provided at its upperend with a closing cap A having an aperture therein to receive the airpipe B which is rovided with a coupling B above the cap p ate forapplication to any desired source of air supply. The well tubing is'also provided with a discharge pipe A2 at its upper portion in the usuamanner. The air pipe B is provided throughout its length atpredetermined dis! tances a art with automatically opening valves o anydesired construction, these valves being constructed and arranged to oen at a predetermined pressure of air, and t e necessary pressure forthat urpose decreasing downwardly in the length of the air pi e. Asshowing a preferable form of this va ve, I have illustrated in thedrawing a coupling C interiorly threaded at its opposite ends to receivethe sections B of the air pipe and provided with one or more aperturesC2 in its side wall communicating with the well tube. Inserted in thisaperture is an exteriorly threaded valve seat C8 having an' aperture C*extending therethrough and provided with a cup portion C5 upon its innerend within the air plpe. This cup portion is provided with suitableapertures C to permit passage'of air within t e cup in order that it mayear upon the diaphragm or yielding head C7 clamped between the innerface of the cup and the cap vided with a clamping face D.l to bear onth'e edge C8 of the cup, and with interior threads D2 to engage threadsC9 on the periphery of the cup and when applied securel retains the diahra m in position. A va ve D3 is carried lby t is diaphragm and Iovidedat its outer end with a seating face 4 adapted to' close the inner end4of the aperture C4. This valve is secured to the diaphragm by means ofa threaded shank D5 extending therefrom and through an aperture in thediaphragm to which a clamping nut De is aplied on the opposite end ofthe diaphragm. he valve is normally held in closed by means of a tensionspring D7 isposed within the interiorly threaded extension D8 of thecup, and bearing at one end upon the diaphragm, and at its o posite endupon a threaded plug D inserte 1n the extension D8 and secured a ainstrotation by means of a contacting loc ring plug D10. These plugs areused to adjust t e tension of thevspring upon the diaphragm and theconsequent ressure required to oplen the valve, and the ocking lugpermits t e valve to be set and positive y retained at its adjustment;

In Fig. 4 a modified form of the cap and valve is applied to the valveseat C5 at its cup end, and comprises a c linderE interiorly threaded atits outer en E and its inner end with alpacked piston E2 having aninterior recess s into which a tension D. This cap is proositionprovided at spring E4 extends, the pressure thereof being adjusted bymeans of the threaded plug E5 retained in position by the locking p lugE inserted in Contact. therewith. The piston carries at itsinner end thevalve E7 having the contact face Es for the inner end of the passage1C4.

Fig. 5 the valve F may open outwardly and its stem F is then secured tothe diaphragm F2 carried by casing F3 and held bg perforated cap F4. Thecasinglis made wit a: packed nut F5 and spring "'F extended therefrom tothe diaphragm. The casing is formed with a discharge passage F7 having atapered valve seat at its outer end and lateral passa es F8.

required tofopen the` `.atfect the same.

In t e o eration of this invention it will be observed t at the face oithe valve exposed to the pressure outsideof the air tube is much less inarea than that vof the diaphragm lex posed to the interior pressure7there being a difference of a roximately one to sixteen. As the result ot 's construction the 'exterior pressure of the liquid in the well haslittle or .no effect u on the o eration of the valve due the valvedisposed at 500 from the top of the` well discharges at a ressure of 250ounds, this pressure also 'ts the body'oi) liquid above said valve sothat when the pressure is relieved this rst valvecloses. The next valveis shown disposed at 400 below the first valve and 'adapted to dischare" at a pressure of 200 ounds, which also ts the 400 of liquid an beinless than the ressure t valve and oes not Descendin lfurther,` the nextvalve is dis osed' at 300 elow the second valveand o y requires apressure of '150 pounds to discharge from the same 'andlift the 300level of liquid, while the lowermost valvev is disposedA at 200 belowthe third valve and only requires a pressure of 100 ppunds for disehar gfrom the same and ting the liquid. ltlvwill thus be seen that thepressure required to dischar e from the valve also raises the liquidfrom t e predetermined de th and that a well of the de th of 1400', ofuid as shown in Fig. 1, can Ee-operatedwit a maximum pressure of v250pounds thus greatly facilitating and economizing in the blowm thereof.

The construction o the' valve herein shown is such as to exert theminimum resistance against opening the same, and also to expose thesmallest possible area to the pressure of the liquid outside of the airpipe, while the enlarged operating diaphragm or' head per-A mits a fullapplication of the pressure within the air ipe until such pressure isrelieved by the liitmg of the liquid above ,the valve.

While these valves are ada ted to discharge.

successively, still the con tions of' the air and liquid pressure withinthe well may be such as to produce a simultaneous operation by olpeningor partially opening two or more o t e va ves when the pro er pressureis maintained within the air pipe.

It will be obvious that the maximum ressure of 250 pounds herein givenas an ustration may discharge from all of the valves beneath theuppermost successively until the body of liquid is reduced proportionatetoi the air pressure required `for hfting the same. l

With the parts of the relative sizes as shown in Fig. 1, the upper valveis set by its spring' to discharge at a pressure of 250 pounds whendisposed at a depth of 500 in the air tubin of the Well, and thediaphragm of this valve has 'an area sixteen .times greater than that ofthe valve face exposed to the liquid pressure. This 500 column of liquidwill produce a back pressure of only 15% pounds upon a i exposed face ofthe valve which tends to open or assist the air pressure to that extent,and 1t would therefore be apparent that a i maintained pressure of only234?, ounds on a 1 diaphragm added to the ack i dischar e the valve, butun er such conditions wien the valve starts to o en there would be aslight momenta bac How of liquid through the valve so t at to obtain apositive raismg of the li uid the pressure of 250 pounds is maintaineand afterpassing through the valve exerts the same pressure u onthe'vlume of liquid thereby raisingv to of the well, by whic time thenext valve be ow is opened and operating due tothe reduced pressure ofthe li uid caused bythe t e same approximately1 100 feet toward the airspace. After this co umnris raised the .escape of air immediatelyreduces the pressure and the s ring by which'the tension of the valve isa justed closes the same and 1t again requires a pressurev of 250 poundsto ressure would discharge from the top valve as at this time there isno back pressure of the liquid thereon. The successive valves operate inthe same manner, it being understood that at no time is the pressurewithin the air pi e necessarily increased above that require for thevalve to'be discharged, and this valve may be used with air, gas,- steamor any iiuidpressure. Y

Having new described my invention and set forth its merits, what I claimand desire to secure by Letters Patent 1s:-

1. In a Well blower, the combination with a pressure pipe, of a seriesof .valves each having an actuated fluid pressuresurface and anactuating fluid pressure surface of greater area, said valvesl beinlocated at diierent distances apart througiout ther length of thepipesand constructed' and arranged to discharge actuating fluidtherefrom at successively downwardly decreasing pressures within said pie. Y 2. In a wellpblower, the combination with a pressure pipecomprising sections of downwardly successively decreasinglengths, of anautomatically operated valve 1n each of said `face o greater area,

len ths having an actuated .fluid pressure surlace and an actuatingfluid pressure sureach valve being constructed and arranged todischargeactuating fluid at a dierent pressure from that of the next successivelvalve beneath the same.

3. ln a well blower, the combination witha pressure pipe provided with aseries of dis-` charge openings, Iof automatically controlled pressureopening valves disposed at dierent discharge at successively downwardlydecreasing pressures.

4. In a well blower, the combination with a pressure pipe provided witha series of dischargeopenmgs, of automatically controlled valvesdisposed at said opening and having their seating faces of less area tan their surface exposed to an actuating Huid within the pipe, andtension means arranged to .control the`discharge 'of actuating fluidfrom said valves at successively downwardly decreasing pressures. l

n testimony whereof, I aiiix my signature in presence of two witnesses.f' Y JOSEPH H. MCEVOY. Witnesses:

, CHAs.v B. Woon, CHAMP Ross.

